Видео даунлоад хелпер

DownloadHelper - Video download browser extension

The converter licensing is a one-time fee without date expiration, except for the free support that is available for one year after the date of the purchase.

You can purchase a DownloadHelper/ConvertHelper license choosing at your convenience any of the 2 options:

Why we do not support PayPal anymore

Back in early 2007, a few months after we started the DownloadHelper project, we wanted to implement a system to permit donations to the project. We looked around to see what solutions were available to process payments and PayPal was there, so we went for it. Over the years, the system has been working but suffered a number of flaws: multiple bugs in the management interface, lack of reactivity from support. Dozens of times, we talked about moving to an alternative solution. But you know, when you have a system with issues but which roughly does the job and on the other side, enough work to occupy 12 hours of your day, you do what is absolutely necessary. So we remained with PayPal.

In late October 2014, we received a mail from PayPal saying that "we were in violation of PayPal's Acceptable Use Policy", (not mentionning which point of this policy)", that our account was "limited" and there was no possible appeal to that decision. "Limited" at PayPal means that you cannot receive nor emit any payment, and they keep your money for 6 months. We also discovered that we were not able to contact their support to get details about this decision. We had to use a personal user account to be able to reach someone at PayPal support, and we were told that apparently, DownloadHelper were in violation with some copyright laws and there was no way to know which ones exactly.

Maybe the guy at PayPal who took the decision was overbusy or too lazzy to make a proper due diligence to see what service DownloadHelper was actually providing (remember that if DownloadHelper breaks any copyright law, pressing PrintScreen also does, so you'd better remove that key off your keyboard). The point was that the decision was made without asking information nor giving us chance to explain our case. No appeal.

If making a wrong decision in a big company is common and happens every day, suspending a partner business without warning nor explanation is highly unprofessional. But somehow, very consistent with PayPal's attitude we could see over the years.

Even worse: a couple of weeks after they suspended our business account, they also closed developers personal PayPal accounts, because there were "linked to one or more accounts not respecting PayPal's policy". So now, in many cases, we don't have a way to donate to the web projects we like since they often implement a single way to make payments, over PayPal. Well, we can't blame them, we have made the same mistake for years.

So, if you plan to do business online, think twice before considering PayPal. Keep in mind they can close your account without notice nor explanation. And if you still go with PayPal, never, ever, keep a significant amount of money on your account: they will block it when they will close your account.

So we moved on.

We looked around see what serious payment solutions were available, and Stripe.com appeared as being the way to go. Regarding technical integration, it's like day and night compared to PayPal: easy REST API, bug-free management tools, and the best of all: a true support (and they are even polite too !).

Stripe is certified as a PCI Level 1 Service Provider, the most stringent level of security certification available in the payments industry. They're audited by the same firm that audits Google, Apple, and Amazon. DownloadHelper is using their Checkout product: that means that no sensitive payment information ever hits our server. Card numbers are directly transmitted over HTTPS to their server that encrypt them with AES 256.

Beyond this, Stripe is one of the most respected payment platforms in the world. You don't necessary know them because they are not a Consumer brand. Among others, they process payments for Facebook, Twitter and Apple, and have even been the only ones able to process payments for The Interview (resisting the potential attacks of Korean hackers, no breach was revealed). On the latter, please read this article, or this one.

Note that the payment is entirely handled by Stripe, one of the most used payment platform on the Web.

We (DownloadHelper) do not have access to any of your banking information.

www.downloadhelper.net

DownloadHelper - Video download browser extension

DownloadHelper is developed and supported under a free software model. But for this model to continue existing, it requires contributions from its users.

If you like DownloadHelper and use it a lot, please consider giving a little something to support further development of Downloadhelper.

If you cannot afford a donation, we would appreciate you leave a rated comment at addons.mozilla.org.

Why we do not support PayPal anymore

Back in early 2007, a few months after we started the DownloadHelper project, we wanted to implement a system to permit donations to the project. We looked around to see what solutions were available to process payments and PayPal was there, so we went for it. Over the years, the system has been working but suffered a number of flaws: multiple bugs in the management interface, lack of reactivity from support. Dozens of times, we talked about moving to an alternative solution. But you know, when you have a system with issues but which roughly does the job and on the other side, enough work to occupy 12 hours of your day, you do what is absolutely necessary. So we remained with PayPal.

In late October 2014, we received a mail from PayPal saying that "we were in violation of PayPal's Acceptable Use Policy", (not mentionning which point of this policy)", that our account was "limited" and there was no possible appeal to that decision. "Limited" at PayPal means that you cannot receive nor emit any payment, and they keep your money for 6 months. We also discovered that we were not able to contact their support to get details about this decision. We had to use a personal user account to be able to reach someone at PayPal support, and we were told that apparently, DownloadHelper were in violation with some copyright laws and there was no way to know which ones exactly.

Maybe the guy at PayPal who took the decision was overbusy or too lazzy to make a proper due diligence to see what service DownloadHelper was actually providing (remember that if DownloadHelper breaks any copyright law, pressing PrintScreen also does, so you'd better remove that key off your keyboard). The point was that the decision was made without asking information nor giving us chance to explain our case. No appeal.

If making a wrong decision in a big company is common and happens every day, suspending a partner business without warning nor explanation is highly unprofessional. But somehow, very consistent with PayPal's attitude we could see over the years.

Even worse: a couple of weeks after they suspended our business account, they also closed developers personal PayPal accounts, because there were "linked to one or more accounts not respecting PayPal's policy". So now, in many cases, we don't have a way to donate to the web projects we like since they often implement a single way to make payments, over PayPal. Well, we can't blame them, we have made the same mistake for years.

So, if you plan to do business online, think twice before considering PayPal. Keep in mind they can close your account without notice nor explanation. And if you still go with PayPal, never, ever, keep a significant amount of money on your account: they will block it when they will close your account.

So we moved on.

We looked around see what serious payment solutions were available, and Stripe.com appeared as being the way to go. Regarding technical integration, it's like day and night compared to PayPal: easy REST API, bug-free management tools, and the best of all: a true support (and they are even polite too !).

Stripe is certified as a PCI Level 1 Service Provider, the most stringent level of security certification available in the payments industry. They're audited by the same firm that audits Google, Apple, and Amazon. DownloadHelper is using their Checkout product: that means that no sensitive payment information ever hits our server. Card numbers are directly transmitted over HTTPS to their server that encrypt them with AES 256.

Beyond this, Stripe is one of the most respected payment platforms in the world. You don't necessary know them because they are not a Consumer brand. Among others, they process payments for Facebook, Twitter and Apple, and have even been the only ones able to process payments for The Interview (resisting the potential attacks of Korean hackers, no breach was revealed). On the latter, please read this article, or this one.

Donations are entirely processed by Stripe and can be made with a credit card. Note that we don't have access to any of your banking private data.

非常棒的插件 Rated 5 out of 5 stars

DownloadHelper - Video download browser extension

How to use the converter with Video DownloadHelper 5

Note that this documentation only applies to Video DownloadHelper 5.1.0 and above.

What is the converter on Video DownloadHelper ?

The converter associated to Video DownloadHelper is an external program installed on your computer that is called in the background to perform operations that could not be carried out from a browser add-on.

It is requested in 3 situations:

Aggregating audio and videos: some video variants on some sites are not available as a single file, but instead, the video and the audio are downloaded separately then assembled locally to generate a unique file that you can use. Using the converter for aggregation is very simple, since you do not have to make choice regarding the output format: the original video and audio streams are preserved and just put together in a container.

Download & Converting: When Video DownloadHelper detects one or more videos on a Web page, it animates the icon. Clicking on this icon opens a panel that lists the available videos. Clicking on the + sign in a video entry opens the list of possible actions. One of them is Download & Convert. This means that the file you requested will be first first downloaded then converted to another format automatically. If you often use this Download & Convert action, you may take benefit of checking the box Use this action by default at the bottom of the actions panel. Next time, you won't have to click on the + sign, but anywhere on the entry to start the Download & Convert action. Note that there is another way to perform automatic conversion using conversion rules. This is explained below in this document.

Convert local files: If you already downloaded some video files and you want to convert them afterwards, click the VDH icon in the toolbar, the panel opens, click Convert local files at the top to start the process.

How to install the converter ?

The converter can be installed on all platforms: Windows, Mac and Linux, but the install procedure varies depending on the platform. Follow this link for details on the installation.

On some rate situations, after you installed the converter on your system, you may be required to go Video DownloadHelper settings, More > Conversion and click Recheck converter.

Choosing the output format

When you pick the Download & Convert action or choose Convert local files and pick the file(s) you want to convert, you see that panel:

Click on the little down arrow to show the available preset output profiles:

Just select the desired output profile in the list and click the Download & Convert or Convert button to proceed.

Note that in this panel, you can also set the target folder and, in the case of Download & Convert, request to be prompted for the target file name and location.

Fine tuning the conversion output

When you are in the Download & Convert or Convert local files panel, there is a link Configure output details. Click on it to enter the output details configuration:

From there, you can change or define many parameters to define exactly what you want your output to be.

The output presets that come with Video DownloadHelper cannot be changed in the interface. If you want to modify an existing preset, select it from the dropdown list at the top left and click Duplicate. This will make a copy that you will be able to modify at your convenience.

You can also create new output profiles from scratch clicking on New, or remove a custom profile with Remove. You can also rename an output configuration by simply changing the text in the top right input.

Keep in mind that many of those parameters may be incompatible and it may take a number of tries for you to find the output configuration that works and you are happy with.

Using conversion rules

As an advanced usage of the conversion feature, you can specify one or several conversion rules. This will allow, for instance to specify that every time you download a FLV file, it will be converted to MP4 without you having to do anything special with the user interface. Or you can say that any video downloaded from a given domain will be converted.

You can access the conversion rules from Video DownloadHelper settings, More > Conversion and the Advanced box checked.

You can create a set of rules that will be tested from top to bottom whenever a Download or Quick Download action is performed. When a rule matches (based on the file extension or the domain), the specified conversion is applied (or gave up if parameter convert is unchecked, and the rules processing stops there. If no rule matches, it doesn't do anything special.

When editing a conversion rule, you can edit a number of parameters:

convert specifies if you want a conversion to be applied or just exit the rules matching

Click on edit output to specify the conversion output to be applied when this rule matches

Using the converter on Linux

When you run Linux, Video DownloadHelper tries to use the binary avconv, part of the Libav project. However, if Libav is standard on Ubuntu, OpenSUSE for instance uses ffmpeg to perform the same tasks (converting videos). So, if avconv is nowhere to be found on your Linux system, ffmpeg is being used instead. Libav is a fork ffmpeg, and for now they are close enough to be used interchangeable. OpenSUSE users reported success using ffmpeg with Video DownloadHelper.

Conversion licensing and watermark

Except on Linux, when you make use of the converter (whether this is an explicit conversion or an aggregation), the generated video file will contain a watermark (representing a QR code) at the top left of every frame.

A license is also required to convert to audio-only formats.

We are sorry for that, but this is the way we fund Video DownloadHelper: selling conversion licenses.

To purchase a conversion license (which is granted for life), follow this link.

Normally, when you purchase a license from Firefox with Video DownloadHelper installed, the license will be automatically installed. If this is not the case, or you already had a license, go to VDH settings, More > Conversion and click Register an existing license, enter your license key and click Register license.

When you reinstall your computer or change your Firefox profile, the license is revalidated (checked against our database). After a certain number of revalidations, the license is locked. We do this to prevent a license key being published on the net and used by thousands. When this happens, you reveive a mail (and are notified about that), with a link to be followed for the license to be unlocked. If you don't receive this mail, please check your spam box.